MARIENVILLE STP
NPDES ID: PA0101931
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 4 effluent violations.
Violations
May 31, 2026
Solids, total suspended
6% over limit
Discharged 37.59119968 kg/d against a permitted limit of 35.4119997 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
8% over limit
Discharged 17.3 mg/L against a permitted limit of 16 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, total suspended
21% over limit
Discharged 42.76679964 kg/d against a permitted limit of 35.4119997 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
8% over limit
Discharged 17.3 mg/L against a permitted limit of 16 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
16% over limit
Discharged 18.6 mg/L against a permitted limit of 16 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
18% over limit
Discharged 41.76799965 kg/d against a permitted limit of 35.4119997 kg/d (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
31% over limit
Discharged 21 mg/L against a permitted limit of 16 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
24% over limit
Discharged 43.76559963 kg/d against a permitted limit of 35.4119997 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
54% over limit
Discharged 37 mg/L against a permitted limit of 24 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
17% over limit
Discharged 82.62799931 kg/d against a permitted limit of 70.8239994 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (10 hours ago)